21836385

素因数分解:

$3^4\times 5^1\times {\mathrm{53917}}^1$

素因数の和:53934

約数の個数: 20

約数和(自身を含む): 39144468

約数和(自身を除く): 17308083

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53917, 161751, 269585, 485253, 808755, 1455759, 2426265, 4367277, 7278795, 21836385]

約数ペア:

[(1, 21836385), (3, 7278795), (5, 4367277), (9, 2426265), (15, 1455759), (27, 808755), (45, 485253), (81, 269585), (135, 161751), (405, 53917)]